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AJvYcCW9enH8YVvVj2B6jrlxVEMmMKhyEtsF+DxevTkOFmQKrz9Wx8EzSJpcXqD477X+jx+l91izUkU7ffUlCEo=@vger.kernel.org X-Gm-Message-State: AOJu0Yyu4LzibEum10Td3nssHdKBXifWGdQc1M4JU+kdxrh2ogVzWGxY mYO5VbBg5oUql2FI9SCztowqB3Fvgw2Clc3jZj5Pv6aywokTAApZ49K4ZKNl0phvSmuPocRG6pR jXu36AJ6OipzLSavzoR79E6IBIERnG6Z7lR98dg/PyufswwFXxpEveTyiLRI= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:450c:b0:657:70af:4e21 with SMTP id 006d021491bc7-6611794276cmr760623eaf.8.1768538945407; Thu, 15 Jan 2026 20:49:05 -0800 (PST) Date: Thu, 15 Jan 2026 20:49:05 -0800 In-Reply-To: <20260116034008.1209650-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6969c341.050a0220.58bed.003c.GAE@google.com> Subject: Re: [syzbot] [hams?] memory leak in nr_add_node From: syzbot To: kartikey406@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: memory leak in nr_add_node BUG: memory leak unreferenced object 0xffff88811b69c2c0 (size 64): comm "syz.0.17", pid 6736, jiffies 4294946654 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ cc cc cc cc cc cc 02 00 00 00 00 00 00 00 00 00 ................ backtrace (crc aa6a12dc): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] __kmalloc_cache_noprof+0x3b2/0x570 mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] nr_add_node+0x686/0x1540 net/netrom/nr_route.c:147 nr_rt_ioctl+0xaec/0x1410 net/netrom/nr_route.c:659 nr_ioctl+0x11f/0x1a0 net/netrom/af_netrom.c:1254 sock_do_ioctl+0x84/0x1a0 net/socket.c:1254 sock_ioctl+0x149/0x480 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0xf4/0x140 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff88811bb55480 (size 64): comm "syz.0.18", pid 6750, jiffies 4294946665 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ cc cc cc cc cc cc 02 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ddf4c02c): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] __kmalloc_cache_noprof+0x3b2/0x570 mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] nr_add_node+0x686/0x1540 net/netrom/nr_route.c:147 nr_rt_ioctl+0xaec/0x1410 net/netrom/nr_route.c:659 nr_ioctl+0x11f/0x1a0 net/netrom/af_netrom.c:1254 sock_do_ioctl+0x84/0x1a0 net/socket.c:1254 sock_ioctl+0x149/0x480 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0xf4/0x140 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff88811b69c5c0 (size 64): comm "syz.0.19", pid 6764, jiffies 4294946677 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ cc cc cc cc cc cc 02 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 46518c43): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] __kmalloc_cache_noprof+0x3b2/0x570 mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] nr_add_node+0x686/0x1540 net/netrom/nr_route.c:147 nr_rt_ioctl+0xaec/0x1410 net/netrom/nr_route.c:659 nr_ioctl+0x11f/0x1a0 net/netrom/af_netrom.c:1254 sock_do_ioctl+0x84/0x1a0 net/socket.c:1254 sock_ioctl+0x149/0x480 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0xf4/0x140 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF Tested on: commit: 983d014a kernel: modules: Add SPDX license identifier .. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11bd439a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=87bc41cae23d2144 dashboard link: https://syzkaller.appspot.com/bug?extid=3f2d46b6e62b8dd546d3 compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=156a339a580000